Analysis of the Electric Field and Ion Current Density Under Ultra High-Voltage Direct-Current Transmission Lines Based on Finite Element Method

Lu, Tiebing; Han, Feng; Zhao, Zhibin; Cui, Xiang

doi:10.1109/tmag.2006.890960

Cited by 80 publications

(28 citation statements)

References 4 publications

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“…The polarity of space charges in the vicinity of conductor of the DC transmission line is similar to the conductor's, and the charged particles have the same polarity as the high voltage end of the insulator [15,28,29]. A transient solution was applied to simulate the particle tracing.…”

Section: The Model and Calculate Conditionmentioning

confidence: 99%

Force and Motion Characteristics of Contamination Particles near the High Voltage End of UHVDC Insulator

Lan¹,

Zhang²,

Wang³

et al. 2017

Energies

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Abstract:It is important to reveal the relations of physical factors to deposition of contaminants on insulator. In this paper, the simulation model of high voltage end of insulator was established to study the force and motion characteristics of particles affected by electric force and airflow drag force near the ultra-high voltage direct current (UHVDC) insulator. By finite element method, the electric field was set specially to be similar to the one near practical insulator, the steady fluid field was simulated. The electric force and air drag force were loaded on the uniformly charged particles. The characteristics of the two forces on particles, the relationship between quantity of electric charge on particles and probability of particles contacting the insulator were analyzed. It was found that, near the sheds, airflow drag force on particles is significantly greater than electric force with less electric charge. As the charge multiplies, electric force increases linearly, airflow drag force grows more slowly. There is a trend that the magnitude of electric force and drag force is going to similar. Meanwhile, the probability of particles contacting the insulator is increased too. However, at a certain level of charge which has different value with different airflow velocity, the contact probability has extremum here. After exceeding the value, as the charge increasing, the contact probability decreases gradually.

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Section: The Model and Calculate Conditionmentioning

confidence: 99%

Force and Motion Characteristics of Contamination Particles near the High Voltage End of UHVDC Insulator

Lan¹,

Zhang²,

Wang³

et al. 2017

Energies

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“…Furthermore, some factors, such as ion diffusion [12] and the wind velocity [13][14][15], were taken into account. In addition, the FEM has been applied to analyse the ion flow field of HVDC transmission lines with more complicated configurations [16,17]. In a word, the above methods have made great attempts to eliminate the errors from Deutsch's assumption and compute more general cases.…”

Section: Introductionmentioning

confidence: 99%

Calculation of the ionised field and the corona losses of high‐voltage direct current transmission lines using a finite‐difference‐based flux tracing method

Qiao

Zou

2015

IET Generation, Transmission & Distribution

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The electric field and ion current distribution on the ground level and corona losses are the important factors for designing high-voltage direct current (HVDC) transmission lines. This study presents a new finite-difference-based flux tracing (FDFT) method for analysing the ionised field. The differential equations are discretised using the finite-difference method and the non-linear algebraic equations are constructed. For the bipolar field, a systematic technique to set up the initial values is well established by estimating the average values of space charge density. The issues of the finite-difference scheme, the normalisation and the selection of mesh points are elaborately discussed to have a better convergence. The boundary conditions of the ionised field equations can be enforced directly, whose benefit is that the iterative process to satisfy the boundary conditions can be completely avoided. The numerical examples show that the results obtained in this study agree well with the ones published in other literatures. The FDFT could be applied for more complicated line configuration with unequal corona-onset electric fields and ion mobilities of opposite polarities.

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“…Since the demand for electric energy is rapidly increasing in the world, a long-distance and high-voltage direct-current (HVDC) power transmission becomes more and more important owing to its advantages of stability, low energy loss and low construction cost [1]. To develop cables for HVDC power transmission, the materials with excellent electrical insulating performance are urgently needed [2,3].…”

Section: Introductionmentioning

confidence: 99%

Improved electrical insulating properties of LDPE based nanocomposite: Effect of surface modification of magnesia nanoparticles

Zhang

Chen

et al. 2014

Composites Part A: Applied Science and Manufacturing

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Analysis of the Electric Field and Ion Current Density Under Ultra High-Voltage Direct-Current Transmission Lines Based on Finite Element Method

Cited by 80 publications

References 4 publications

Force and Motion Characteristics of Contamination Particles near the High Voltage End of UHVDC Insulator

Force and Motion Characteristics of Contamination Particles near the High Voltage End of UHVDC Insulator

Calculation of the ionised field and the corona losses of high‐voltage direct current transmission lines using a finite‐difference‐based flux tracing method

Improved electrical insulating properties of LDPE based nanocomposite: Effect of surface modification of magnesia nanoparticles

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